Beck has said over the years that he ran Vox AC30s in the studio with the Yardbirds, and a key part of his sound during this period was a Tone Bender MK I.

In this photograph of Pete performing with the Who you can see he is plugged into a Tonebender mk1 fuzz pedal. It can't be anything else given the large, wedge shaped wooden enclosure and strange top-mounted input jack. Originally designed to replace Vic Flick's Maestro FZ1 (he of James Bond guitar riff fame) after complaining to Hurst that the FZ1 completely lacked sustain (true!), these early Tonebender fuzz units were hand made by Gary Hurst out of his home and later sold through the Sola Sound music shop in London. Legend has it Pete sold his Tonebender to aspiring Hull guitarist Mic Ronson who would go on to use it as one of Ziggy Stardust's Spiders from Mars.

In this picture, Mick Ronson can be seen playing through his signature rig of a Les Paul Custom, a Marshall Major 200, a Sola Sound Tone Bender and a Cry-Baby wah. He’d acquired all of this equipment by the end of the 60’s during his time playing in Hull band The Rats, and used it for nearly the entirety of his time with David Bowie in the early 70’s.

This detailed article on Pro Audio Files does a great job of detailing his gear and explaining how he used it: https://theproaudiofiles.com/the-anatomy-of-mick-ronsons-guitar-tone/

In an Instagram post by Michael Aaron Potter dated July 15, 2023, Bradford Cox is visibly using a Sola Sound Tone Bender MK1, identifiable by its distinct gold wedge shape.

"a ToneBender MkI variant w/surprising range! some super-cool fuzz for dark-country’n’easterly playing, too."

While there is no photos or film of Vic using a Sola Sound Tone Bender MK-1 it’s been recollected by Gary Hurst and Vic himself that he got Gary to modify a Gibson-Maestro FZ-1A “Fuzz-Tone” for more sustain and with a second jack instead of a built in cable so he could play farther away from the pedal (the “Fuzz-Tone”s cable is only around 8 feet long) and Gary produced the original prototype “Wooden Box” 1965 Sola Sound “Tone-Bender” (Mark 1) which was later developed into the Mark 1.5 (The Fuzz Face circuit) and Mark 2 “Professional” which would be used by players like Jimmy Page and Jeff Beck, without Vic, most modern fuzzes probably wouldn’t exist and I’m really suprised this pedal isn’t on his equipboard page to be honest. NOTE The photo I used is just to show the prototype Vic had next to the production model Tone Bender Mark 1’s